HelioClim-3 Archives automatic access ("+ Add meteo" Optional)

Last update: Jan. 2018

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Automatic access to satellite-derived solar radiation database HelioClim-3 Archives. Please for a quotation and receive your SoDa credentials. This type of access is particularly well-suited for monitoring applications. Automatic access to HelioClim-3 together Meteo variables is also described ("+Add Meteo" option). Meteo variables are extracted from MERRA-2 reanalyses (NASA) from Feb. 2004 to approx. a month ago, and from GFS (NCEP) afterwards.

Rename the text file with the .bat extension and double click on it to retrieve the output.csv output file (Windows environment). Or, rename the text file with a .sh extension and run it using >my_script.sh in a Unix environment.

login/password authentication: login and password provided by the SoDa team to access HelioClim-3 within the framework of your subscription. Note that a free permanent automatic access is set up for the site of Carpentras, France, where a Baseline Surface Radiation Network (BSRN) station is available with the login/password guest/guest

the separator is the space for the "classic" HC3 format and the semi-colon for the "unified" HC3 format.

the time period max retrieved using the wget command is: one month for a 1 to 5 min time step, one year for a 10 min up to one hour time step, and unlimited for the other time steps.

"+ Add Meteo" option: The only difference is that by default, the format is unified. Change "hc3vX" into the version of HelioClim-3 of your choice in the next request:wget -O output.csv --header="soda-user: your_login" --header="soda-passwd: your_password" ... "http://server/pub/hc3vX_meteo_request.php?geopoint=latitude,longitude&elevation=altitude ... &firstday=yyyy-mm-dd&lastday=yyyy-mm-dd&duration=time_step&time=time_reference&slope=tilt_of_panels ... &azimuth=az_of_panels&albedo=ground_albedo&horizon=boolean_horizon"

Automatic access using CURL

You can also automatically retrieve HC3 Archives time series using the CURL command. The advantage is two fasten the requests by an approx. factor of 2. Note that all parameters described in the WGET section are valid for CURL, except that CURL outputs don't have any header.

"+ Add Meteo" option: The only difference is that by default, the format is unified. Change "hc3vX" into the version of HelioClim-3 of your choice in the next request:curl -F "stations=@stations.txt" -o output.csv --header "soda-user: guest" --header "soda-passwd: guest" ... http://www.soda-is.com/pub/hc3vX_meteo_request.php